New Rules Limit Coal Plants

The Obama administration on Tuesday announced long-awaited rules to limit carbon-dioxide emissions from new power plants that will effectively block the construction of new coal-burning plants and make natural gas even more attractive as a fuel for generating electricity.

The rules, in the works since late 2009, will add more stress to the beleaguered coal-mining sector while encouraging development of renewable energy, and will add to Republicans' complaints of regulatory overreach by the Obama administration ahead of the...